what is the effect for shortage of resources and trade between countries?

Question

A. Division of labor
B. Specialization of knowledge
C. Economic interdependence
D. Political interdependence***
Please can I have help? Let me know if i'm right.Thanks!

Answer 1

Thanks

Answer 2

I deleted a post because of an inappropriate name.

Answer 3

I just did, too.

Next time = banned

Answer 4

Wait is the answer D?